<!--富文本编辑器-->
<template>
  <div class="rich-text-editor-container" v-loading="loading">
    <quill-editor :content="content" :options="editorOptions" class="ql-editor" ref="myQuillEditor" @change="onEditorChange($event)">
    </quill-editor>
    <!--视频上传弹窗-->
    <div>
      <el-dialog :close-on-click-modal="false" width="50%" style="margin-top: 1px" title="视频上传" :visible.sync="videoForm.show" append-to-body>
        <el-tabs v-model="videoForm.activeName">
          <el-tab-pane label="添加视频链接" name="first">
            <el-input v-model="videoForm.videoLink" placeholder="请输入视频链接" clearable></el-input>
            <el-button type="primary" size="small" style="margin: 20px 0px 0px 0px " @click="insertVideoLink(videoForm.videoLink,'')">确认
            </el-button>
          </el-tab-pane>
          <el-tab-pane label="本地视频上传" name="second">
            <el-upload v-loading="loading" style="text-align: center;" drag 
            :action="uploadVideoConfig.uploadUrl" 
            accept="video/*" 
            :name="uploadVideoConfig.name" 
            :before-upload="onBeforeUploadVideo" 
            :on-success="onSuccessVideo" 
            :on-error="onErrorVideo" 
            :multiple="false">
              <i class="el-icon-upload"></i>
              <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
              <div class="el-upload__tip" slot="tip">只能上传MP4文件，且不超过{{uploadVideoConfig.maxSize}}M</div>
            </el-upload>
          </el-tab-pane>
        </el-tabs>
      </el-dialog>
    </div>
  </div>
</template>
<script>
// require styles
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'
import { quillEditor, Quill } from 'vue-quill-editor'
// // 这里引入修改过的video模块并注册
// import Video from './video'
// Quill.register(Video, true)

// 设置title
import { setQuillTitle } from './quill-title.js'
// 工具栏
const toolbarOptions = [
  ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线
  ["blockquote", "code-block"], // 引用  代码块
  [{ list: "ordered" }, { list: "bullet" }], // 有序、无序列表
  [{ indent: "-1" }, { indent: "+1" }], // 缩进
  [{ size: ["small", false, "large", "huge"] }], // 字体大小
  [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
  [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
  [{ align: [] }], // 对齐方式
  ["clean"], // 清除文本格式
  ['video'] // 视频
]
export default {
  name: 'RichTextEditor',
  components: {
    quillEditor
  },
  props: {
    /* 编辑器的内容 */
    content: { // 返回的html片段
      type: String,
      default: ''
    },
    // 视频上传配置
    uploadVideoConfig: {
      type: Object,
      default () {
        return {
          uploadUrl: '', // 上传地址
          maxSize: 10, // 图片上传大小限制，默认不超过2M
          name: 'Filedata' // 图片上传字段
        }
      }
    }
  },
  data () {
    let _self = this;
    return {
      loading: false, // 加载loading
      editorOptions: {
        placeholder: '',
        theme: 'snow', // or 'bubble'
        modules: {
          toolbar: {
            container: toolbarOptions, // 工具栏
            handlers: {
              'video': () => {
                // 覆盖默认的上传视频，点击视频图标，显示弹窗
                _self.videoForm.show = true
              }
            }
          }
        }
      },
      // 视频上传变量
      videoForm: {
        show: false, // 显示插入视频链接弹框的标识
        videoLink: '',
        activeName: 'first'
      }
    }
  },
  mounted () {
    // 初始给编辑器设置title
    setQuillTitle()
  },
  methods: {
    // 文本编辑
    onEditorChange ({ quill, html, text }) {
      console.log('editor changed:', quill, html, text)
      console.log('html.replace(/<[^>]*>|/g:', html.replace(/<[^>]*>|/g))
      this.$emit('update:content', html)
      this.$emit('change', html)
    },
    hideLoading () {
      this.loading = false
    },
    /** --------- 视频上传相关 start ---------  */
    insertVideoLink (videoLink, poster) {
      if (!videoLink) return this.$message.error('视频地址不能为空！')
      this.videoForm.show = false
      let quill = this.$refs['myQuillEditor'].quill
      // 获取富文本
      let range = quill.getSelection()
      // 获取光标位置：当编辑器中没有输入文本时，这里获取到的 range 为 null
      let index = range ? range.index : 0
      // 没有视频默认封面时，设置默认视频封面图片
      const img = poster ? poster : 'https://cube.elemecdn.com/6/94/4d3ea53c084bad6931a56d5158a48jpeg.jpeg'
      // 在光标所在位置 插入视频
      quill.insertEmbed(index, 'video', {
        url: videoLink,
        poster: img
      })
      // 调整光标到最后
      quill.setSelection(index + 1)
    },
    // el-文件上传组件
    onBeforeUploadVideo (file) {
      this.loading = true
      let acceptArr = ['video/mp4']
      const isVideo = acceptArr.includes(file.type)
      const isLt1M = file.size / 1024 / 1024 < this.uploadVideoConfig.maxSize
      if (!isVideo) {
        this.hideLoading()
        this.$message.error('只能上传mp4格式文件!')
      }
      if (!isLt1M) {
        this.hideLoading()
        this.$message.error(`上传文件大小不能超过 ${this.uploadVideoConfig.maxSize}MB!`)
      }
      return isLt1M && isVideo
    },
    // 文件上传成功时的钩子
    onSuccessVideo (res) {
      this.hideLoading()
      if (res.code === '100') {
        this.insertVideoLink(res.url, res.cover)
      } else {
        this.$message.error(res.desc)
      }
    },
    // 文件上传失败时的钩子
    onErrorVideo () {
      this.hideLoading()
      this.$message.error('上传失败')
    },
    /**--------- 视频上传相关 end --------- */
  }
}
</script>
<style>
.rich-text-editor-container .ql-container {
  height: 300px;
}

.rich-text-editor-container .ql-editor {
  padding: 0;
}

.rich-text-editor-container .ql-tooltip {
  left: 5px !important;
}
</style>
